Resource exhaustion in Scriban
CVE-2026-74785
Scriban before 7.0.0 contains three distinct denial-of-service vulnerabilities in expression evaluation that bypass existing safety controls through unbounded string multiplication, uncontrolled BigInteger shift operations, and LoopLimit bypass via range enumeration in builtin functions. Attackers who can supply templates can cause out-of-memory exceptions or CPU exhaustion, typically terminating the entire host process.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.005 (38.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 38.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.005 · change: +0.002
Affected products
- Scriban — versions 0, 7.0.0
Weakness classification (CWE)
References
- github.com/scriban/scriban/security/advisories/GHSA-xw6w-9jjh-p9cr (vendor-advisory)
- www.vulncheck.com/advisories/scriban-before-denial-of-service-via-unbounded-res… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-74785?
- CVE-2026-74785 is a medium-severity vulnerability in Scriban, classified under Uncontrolled Resource Consumption. CVSS score: 6.5/10. Published 2026-08-16.
- How severe is CVE-2026-74785?
- Medium severity. CVSS v3 base score is 6.5 out of 10.